GALLIUM — (Ga), chemical element, metal of main Group IIIa, or boron group, of the periodic table. It liquefies just above room …Britannica English vocabulary

DOMEYKITE — a copper arsenide mineral (formulated Cu3As) that is often intergrown with algodonite, another copper arsenide. Both are classified among the …Britannica English vocabulary

ARSENATE MINERAL — any of a group of naturally occurring compounds of arsenic, oxygen, and various metals, most of which are rare, having …Britannica English vocabulary

YEAR IN REVIEW 2001: NOBEL-PRIZES — Prize for Chemistry It was once common knowledge that plastics-polymeric materials that can be molded or shaped-are fundamentally different from …Britannica English vocabulary